The group, known as Think Big, presented its report to a group of business leaders, mainly from the construction industry.

"Sacramento, at the end of the day, actually has some enormous competitive advantages from just a pure market perspective," said Chris Lehane of Think Big.

The report showed that the Sacramento Kings had a better attendance record during 20 of the 23 seasons in which both cities had an NBA team, from 1985 to 2008.

It said that during those same years, Sacramento had 19 sellout seasons, compared with six in Seattle.

The report does include attendance figures since 2008 when the Sonics left Seattle.

According to ESPN, Sacramento currently has the second-worst attendance record in the NBA.

The Think Big report also claimed that Sacramento has the second best TV market in the NBA.

In raw numbers, Seattle has more than a million more television households than Sacramento.

However, Think Big said Seattle's number should be "adjusted" -- divided by four to account for the four major league teams the city would have if the Sonics return.

"Most corporate entities will have a specific budget and they will pick one (team) or the other, but they're not going to necessarily do it across the board. Or if they do, the nut that they're going to spend is just divided four ways," said Lehane.

By contrast, Lehane, said, an NBA team in Sacramento has a monopoly of corporate sponsorships.

Ralph Morton, executive director of the Seattle Sports Commission, did not respond specifically to the Think Big report.

He said he considers both communities to be "good basketball towns" with strong corporate communities.

Morton said he knew of no pro-Seattle report that was being planned.

"I'm quite certain there will be nothing of the type," said Morton.

The NBA's 30 owners are scheduled to meet in mid-April to decide whether the Kings should stay in Sacramento or move to Seattle next season.

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